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Finding the Fourth Proportional to 671,635.70, 1,006,870.35 and 405,113.30

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Solution

The fourth proportional to 671,635.70, 1,006,870.35 and 405,113.30 is: 607,318.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,635.70 : 1,006,870.35 = 405,113.30 : x
  2. Step 2: Convert to fraction form
    671,635.70/1,006,870.35 = 405,113.30/x
  3. Step 3: Cross multiply
    671,635.70x = 1,006,870.35 × 405,113.30
  4. Step 4: Simplify right side
    671,635.70x = 407,896,570,160.66
  5. Step 5: Solve for x
    x = 407,896,570,160.66/671,635.70
  6. Step 6: Final answer
    x = 607,318.18

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